Sewing-machine.



U. E. BROWN. SEWING MACHINE.

APPLICATION NLD MARA. 15H0.

. 9123,23? Patented Jamx 5, 1.915,

2 SHEETS-SHEET l` 0. E. BROWN. SEWING MACHINE. APPLIGATXON ULEB MARA. 1910.

Patented L131115,1915,

2 SHEETS*SHEBT 2.

an erarne reageren" ornata.

tenerme-amenities. v

Specification Lefers @etant Patented dan.' 551915..

vide a simpleeandelective" means for lifting the presser-foot-and-the stitch-.setting-implement uniformly regardless of the varying thickness of the Work.

Aceording tothe present invention Athe ,presser-bancarias bothv the presser-foot7 and the stitch=setter, and is embraced-by an' end- Wise-movahle 1sleeve which sustains Aa Afulerum lfor avcramping lever havinga jaw adjacent said fulcrum for Yengaging the Kpresser-har, means .being provided for rocking' thecramping lever in 4the productionof each stitchy .toqsuecessively kgrip and lrelease the presiroar. Y,

The invention also includes specialfmeans for supporting 'and .for imparting .to fthe stitch-setter differential Amovenfients relative to those offthe-'presser-foot.

In the drawings, Figure l is a rearside elevation of a macliineembodying lthe present improvements, lwith the frame partly in section, andA Fig. 2 is an elevation representing-,thevfront'endo the machine. Fig. 3 is an elevation of the actuating means for the presserfootliting.rock-shaft. Fig. 4. is a perspective view upon a larger scale of the presser-bar and its lifting means, and Fig. 5 a perspective view of a portion of the presser-bar lifting means. -Figs. 6 and 'i'` are perspective views-representing the lower portion of the presserbar, the presser-foot, the stitch-setter and-the sustaining and actuating means for the latter, these views being taken respectively lfrom `alcove land below such parte.

The frame of the machine is shown constructed with the hollow'standard l with cylindrical work-supporting arm or horn 2 and hollow overhanging bracketarm 3 ter minating in the usual head The needle 5 is mountedin the reciprocating needlebar G'Ijeurnaled in the upper end lower hearings 7 of the.joggingjneedlef'freme 8 whose lateralmginovements .in @the line .of A seenilteke place while the need-le isin its lower position forv advancine the work tospace the stitches. The nee le-bar .carries the' usual collarf'Q vconnectedhy means o'the 'Pitman 10 with acrankarin"of .tlfierocleshavftll havin suitable connections with the upper end o la link-har 12 .journaled vin the 4swinging yoke 13 ,pivotally mounted upon the rock-shaft 14 -andprovided with a strap 15 embracing .the .crank 16 in ythe main-shaft 17 suitaloly journale'd in .thestandard l. Cooperating with the needle is the shuttle 18 provided with the barrel-shaped.thread-case 19, `and actuated .by means of the driver 20, ixed'lupon thefo'rward end of the-rock-shaft 2l which is connected by snitable rneans,`in-

clnding the .pitmanfl with-thelink-ea'r 12 so esto actuate the shuttle synchronously' With'the needle movements.

The presserdootgQB `is Nformed withfthe usual elongated needle'-aperimre, land isrprovided with a-shank24 having at its upper end yaLtransversely. 'grooved member adjustably secured by meansA of the fastening screw 26 upon a Acorrespondingly shaped seat 27X formedupon a 'collar '27if1redto the lower end ofthe presser-bar-28. The collar 9.7 is formed with a slot 25 to receive the screw 2G. The :presser-har is 'fitted 4to suitable bearings in the head othe brackeoarxn and is provided at the top with a shoulderedcap 29 to receive/the lower Aend ofaeoiled conm pression prin 30 'whoseopposite 'end is similarly .fitte to a shouldered. `plug 31 .formed upon the lower end of the adjusting screw 32 secured against rotation by the lock-nut 33 in thethreaded boss 34 of a thrust-rod 35 secured in a boss 36 upon the top of the. bracketarrn member 4. '-ihe presser-bar is latted upon one side at 28c and has slidingly mounted thereon the sleeve 37 provided with laterally projecting spaced ears 38 betweenwhich, is pivoted by means of the pin 39 the-roclr-lever 40 having at its lower end a slot or fcrk'4l Within which is pivoted by means of a pin 42 the cramping lever 43 having upon one side of its fulcrum-point the jaw 44 adapted to-enter a slot 45 in the lower end ofthe sleeve 37 and engage the latted portion 28* of the'presserhar. The supporting lever'40 is formedwith lvoo an upward extension or lug 46 in which is adjustably secured and locked bymeans of the nut 47 the threaded outer end oi' a stopscrew-pin 48 whose point passes through a lateral aperture 49,'inbthe sleeve 37 for engagement' with vthe {iatted side 28* of the presser-bar. The stop-pin 48 serves not only as a 4clamping member of the swinging lever 40, but serves' to limit the movement of the latter to determine the effective positionot` the pivotal pin 42 and thus to control the timing of theoperative engagement of the clamplng members of both the levers and 43 under the uniform lifting movements i'mparted to the latter by its connections with the actuating 'eccentric 59.

The apertured'oute'r end ofthe cramping lever 43 embraces a pin 50 by means of which itfispivotall connectedv with aforked .lower end of a 1in 51 whose upper end is pivotall connected by `.means of a pin 5 2 with a. at'eralcraiikarm 53 secured to` the forward end. of a rock-shaft 54, journaled within and long itfldinally fof the bracketarm' and having/fixed uporrits'rearward endl the lateral'crank-,arm 55 connected by meansofj the V'screw-stud 56 with the ec. centric-rod 5.7

having vat its lower eccentric 59 imparts tothe rock-shaft 54,

through 'the-"'e'ccentricfrodf; 57 Tand crank,` arm rocking-movements which are com-v municated tothe cramping lever 43 through the crankarrm''" arid' 1in'k`"51, vwhich.v movements are ineffective presser-bar and-the presser-foot when the cramping lever 43 is raised suiciently to seat its jaw 44"iily upon the atted por-l tion 28x of the presser-bar, which causes these parts tozibecome locked together and to be lifted bodily inthe continued upward .movementr of the link 5l with the crankarm53 The presser-bar is ada ted to riseindependently of the'sleeve 3 in order to per'- mit the presser-foot toaccommodate itself to different 'thicknesses of material without ati'ecting the action of thellt'ting mecha'- nism thereon, and the sleeve is normally pressedvdownward by a spring surrounding the presser-bar and interposed between the top of the sleeveand'a suitable abutment above ythe same, whereby the forked lateral extension 40X at the lower end of the lever 40, which embraces the presser-bar 28, is caused to normally rest upon the top of a series of washers 61 of yielding material which are interposed between the same upon the presser-'bar and the top of the lower presser; bar bearing, whereby noise land shock arel-prevented inthe actuation of 'the presserbar The eccentric 59 is so set upon themainshaft 17 asto cause the lifting of- .is a block l at 72 upon endv the for the greater part, i

'but whch. become f'effective inplifting -theu to permit the work to be advanced by the y needle without resistance.

Fixed upon the lower presser-bar 28 above the presser-foot shank 62 formed with a split socket emon by means of the screw The block is provided with a second adjacent spaced perforated ears 64 entered by the clamp-screw 65 for securing the sa e upon the lower end of a vertical 66 journaled in the lower 'member of. the bracket-arm head 4 and having fixed to its upper end the collar. 67 with rigidlateral arm 68 carrying the roller-stud 69 against the lower side of which rests the flat wearing face upon the top of the'. forward por tion 70 of alifting rock-lever 71 ulcrumed the bracket-arm and having in its rearward end an eye `73for attachment of Ia treadle-rod in a manner` well known. As will be evident,'the manual actuation of thelever 71. operates tliroughfthe slide-bar 66 a'ndthe blockv 62 'to raise .the l presser-bar independently of itsaut'omatically acting lifting means..A

The block '62fjis" rovided'with a rearwardly andI "-'1pwar Iveittending arm 74 having asplit bearingv 75` in' which is adjustabl' 'securedbymeans of the 'clamp- `screw 6 the hub 77 cfa depending lcver 78 carrying at its lower. enda studscrew 7 9 connected by means of a link 8O with a similar screw 81 tappedinto a rearwardly Aprojecting ear of a lever 82rhaving at' its lower en' a slot 83 entered by a fastening screw 84 tapped into the upper endl or shank of a stitch-setting blade 85, whose lower end is shaped to embrace the individual stitches of a'seam, intermediatel the needle punctures, in a manner well known.

The upper end of the lever 82 is pivotally connected by means of the stud-screw 86 with the lateral arm 87 of ing the center-screws 89 which enter conical recesses in the 77 of thelever 7 8, by means of which said rocker'is mounted to oscillate upon the arm 74. The rocker 88 is provided with an upwardly rojecting arm 90 connected by means Orp a screw-stud 91 with one end of a link 92 whose opposite end is connected by means of the screwin 93` with a depending crank-arm 94 xed upon the forward end oflthe rock-shaft 54 and preferably formed integral with `the crank-arm 53f The crank-arms 53 and 94 are "so proportioned 4and arranged that the rocker 88 is oscillated to carry the stitch-setter through the slot'23x in vthe presser-foot l23 and into operative relation with thevwork just after the needle `has accomplished a feeding movement and has emergedV from pdition of the' split socket with opposite endsvoi the hub slidear a rocker 88 carrymesser the' work, the stitch-setter 'remaining in Contact with the work until the needle is descending into the forward end of the neeelle aperture in the presser-foot to make a new puncture. ln order that the stitchsetter` may have ai lateral movement in the line offseam toA avoid interference with the needle, the linir ismadc shorter than the crane-arm 87, whereby the stitch-setter is drawn bachwardly by the link as said crankarm rises to withdraw it from'contact with the work, and is correspondingly advanced in its descending movemen The support of the stitch-setter uporn the block 62 rigidly connected with the presserbar 28 causes' it to partake of the rising and'v falling movements oit' the latter, and insures that both the presser-foot and the stitchsetter shall-be disengaged from the work while the needleis performing its feeding -movement, and it also insures that both shall be lifted clear of the work when the presserf foot is raised for the introduction or removal of the same. v

To adjust thepoint of application of the stitch-setter relatively to the needle-path, the lever 78 is provided with anear 95 which is engaged upon the rearward side by an adjusting screw 96 carried by a depending ear 97 of the arm or standard 74' and upon the front side by the point of an adjusting screw 98 passing through a lateral ear 99 'of the block 62. To adjust'the fulcrum-point of the linlr 80 in the direction of seam, oneor the other of the adjusting screws 96 andv 98 is Withdrawn to the re# quiredextent and the other advanced to` pressthe depending ear firmly against the same, the path of movement of the stitch-setter carrying lever 82 being thus modified to suit the'requirements of the workin bringing the stitch-setter into eX- act register with the stitches.

From the foregoing description it will be observed that the machine herein shown .and described contains not only common ac ,uat-v ing mechanism for the clutch device including the cramping .lever 48 intermittingly engaging the presser-bar and the vibratory members 80 and 87 connected with the stitch-settercarrying lever vi, but has a lcommonl support, consisting of the pressery .l bar Q8, for both the presser-foot and the stitch-setter, wherebythey may be bodily lifted from and lowered into operative relation with the Work by common automatically and manually Acontrolled means, although under automatic control their rising and falling movements are differential. It will be further observed that, although the operative face of the presser-foot is substantially iatand that of the stitch-setter is arched.,l they constitute practically alternating pressers in their operation upon the work with similar function and mode of op- .rock-shaft, an arm fixed eration although difering in specific eiifect upon the Work. a

Having thusset forth the nature of the inventiom'what 'I claim herein l. In a sewing machine, ifiibcombination, a stitch-setting implement, a plurality of swinging arms connected with and sustaining said implement at spaced pivotal points, and actuating means whereby said implement is given bodily movements upon said llmS I Y 2. ln a sewing machine, in combination, a stitch-setting implement, a plurality of swinging arms connected with and 'sustaining said implement at spaced pivotal points, and means applied to one of said arms for imparting to it its swinging movements.

3. In 'a sewing machine, incombination, a stitch-setting implement, a plurality fof" swinging arms of different lengths each connected independently of the other with said implement, and actuating means for imparting operative movements to said implement. j i

'-iJlii a sewing machine, in combination, a stitcheetting implement, a swinging su port upon which said implement is pivotall)y mounted and positively confined. to movement in a ixed'path, en actuating-,rockshaft,.and connections between -the same and said support including atrain of elements having' permanent pivotal y connections,v wherebyT a positive connection is edected between the actuating rock-shaft and the stitch-setting implement and the latter derives from said rock-shaft reciprocatory movements which are positively controlled in both directions.

In a sewing machine, the combination with `a'- presser-foot, a presser-bar to which said presser-foot is attached, a stitch-setting implement, a movable support for said implement sustained by the presser-bar, and presser-bar lifting means, of an actuating upon said roclshaft k.and operatively connected with said presser-bar lifting means, and a second arm fixed upon said rock-shaft and operatively connected with the stitch-setting irri-- plement for imparting operative movements A,

to the latter.

6. In a sewing machine, in combination, a presser-foot, a presser-bar by which said presser-foot is carried, a fulcrum sustained by said presser-bar, a rocker mounted on .said fulcrum and having a lateral arm, a

stitch-setting implement pivotally connected with the lateral arm of said rocker, means including a swinging arm for controlling the movements of said stitch-setting implement, actuating means connected with said ocker, and lifting means for the presserar. i 7.1m a sewing machine, the combination with stitch-for1ning mechanism comprising vofplement, a carrying lever a?i needle and a cooperating means for actuating them, and a presserfoot, of a stitch-settingimplement, acarrying lever therefor, a rocker mounted iipon a fulcrum sustained .in fixed relation with said presser-foot Iand having a vibratory arm connected to'said carrying lever, a link of dier'ent length from said vibratory arm and spaced therefrom and also connected at vone end' with said carrying lever, a fulcrum for the other end of said link and sustained in fixed relation with said presser-foot, an means for actuating said rocker to reciprocate the stitch-setting implement in acurved path.

8. In a sewing machine, the combination with stitch-forming mechanism comprising a needle and a coperating loop-taker and means for actuating them, and apresserfoot, of a stitch-setting implement, a carrying lever therefor, a rocker mounted upon a ulcrum sustained in fixed relation with the axis of movement of said rocker and having a vibratory arm connected to said carrying lever, a link of different-length from said vibratory arm and'y spaced therefromv and also connected atoneend with'f-said carrying lever, a fulcrum for the other end of said link sustained inyfxed relation -with the rst named -fulcrum, means for adjusting the position of the fulcrum of said link, and means for actuating said' rocker to reciprocate, the stitch-setting implement in a curved path.

9. yIn-a sewing machine,'the combination with stitch-forming mechanism comprising a needle and a cooperating loop-taker and means for' actuating them, a presser-foot, anda presser-bar by which said presser-foot is carried, of a bracket fixedl to .said presserbar, a rocker fulcrumed upon said bracket and provided with a lateral crank-arm and with a second crank-arm, astitch-setting imtherefor, a pivotal connection intermediate said carrying lever and the lateral crank-arm of saidV rocker, a fulcrum-stud carried by said bracket, a link connection intermediate said fulcrum-stud.

and said carrying lever for the stitch-setting implement, and actuating means connecte with the second arm of said rocker for imparting .operative movements to the stitch setting implement.

10. In a sewing machine, the combination with stitch-forming mechanism comprising a needle and a .cooperating loop-taker and means for actuating them, a' presser-foot, and a presser-bar by which said presser-foot is carried, of a bracket fixed to said presserbar, a stitch-setting implement, a carrying lever therefor, a pair of spaced substanti ally parallel y carrying lever is pivotally connected, a rockloop-taker and `ed upon said presser-bar,

v said bracket,

Lsaid fulcrum and having a d a fulcrum movable relatively lto vibratory members `to which said` arms from which the stitch-setter derives operative movements,

a spring applied tojlsaid presser-bar, a clutch device slidingly ni'ountand an operative connection between the second crank-arm of said rock-shaft and said clutch device whereby the presser-bar is lifted in opposition to said spring.

11. 1n a sewing machine, the combination withstitch-forming mechanism comprising a needle and a cooperating loop-taker and means for actuating them, a presser-foot, and a presser-bar by which said presser-foot is carried, of a bracket bar, a stitch-setting implement supportectby means for imparting o erative rising and falling movements to said setting implement, a slide-bar attached to said bracket and disposed parallel with the presser-bar, a lateral studlor projectionu on said slide-bar, and a lifting lever adapte lto engage said lateral stud or projection of the slide-bar in lifting the presser-'bar'with the presser-foot and stitch-setting implement.

12. In a sewing machine, in combination, a presser-foot, a presserar byI which said presser-foot is carried, a fulcrum sustained by said pressenbar. a rocker mounted on said fulcrum, a stitch-setting implement piv. otally connected with said rocker, means for controlling the action of said stitch-setting presser-foot is carried, a fulcrum sustained by said presser-bar, arocker mounted on stitch-setting-implement pivotally connected to the lateral arm of said rocker and having means for varying named fulcrum, tlielposition of the fulcrum for lsaid stitch-settingv implement, actuating means connectedfwith said rocker,` and lifting means for the presser-bar.-

In testimony whereof1zhave signed my name to this specification', in the presence of two subscribing witnesses.

OTIS E. BROWN.- Witnesses:

HENRY J. Minnen,

H. ,LegionnnMANm Jr.

iXed to said presnsel-l stitch'- in combination` 'a presser-foot, aIpresser-bar by whichv said the first the point of application of for the presserlateral arm,` a 

